A4557 — Lead wires, (e.g., apnea monitor), per pair
HCPCS Level II A-code · short descriptor: “Lead wires, pair”
- Code system
- HCPCS Level II
- Family
- A — Medical & surgical supplies, ambulance
- Medicare coverage status
- Carrier judgment — coverage decided by the DME MAC
- DMEPOS payment category
- Supplies
- Prior authorization
- Not on Medicare required-PA list
- Status
- Active (April 2026 HCPCS)
Prior authorization
Not on the Medicare required-PA list as of the January 13, 2026 update (74 items). Medicare Advantage and commercial plans set their own prior-authorization rules for this code — verify per plan before delivery.
A4557 Medicare fee schedule (April 2026)
Base (no modifier) Supplies
Medicare allowable ranges from $12.04 to $22.06 depending on state and rural status.
| State | Non-rural | Rural |
|---|---|---|
| AK | $17.89 | — |
| AL | $13.48 | $21.23 |
| AR | $13.48 | $22.06 |
| AZ | $12.04 | $19.81 |
| CA | $12.46 | $19.81 |
| CO | $12.10 | $22.06 |
| CT | $13.11 | $22.06 |
| DC | $12.51 | $19.81 |
| DE | $12.51 | $19.81 |
| FL | $13.48 | $22.06 |
| GA | $13.48 | $22.06 |
| HI | $18.65 | — |
| IA | $12.23 | $19.81 |
| ID | $12.10 | $22.06 |
| IL | $13.20 | $19.81 |
| IN | $13.20 | $19.81 |
| KS | $12.23 | $19.81 |
| KY | $13.48 | $22.06 |
| LA | $13.48 | $22.06 |
| MA | $13.11 | $22.06 |
| MD | $12.51 | $22.06 |
| ME | $13.11 | $22.06 |
| MI | $13.20 | $19.81 |
| MN | $12.23 | $19.81 |
| MO | $12.23 | $19.81 |
| MS | $13.48 | $19.81 |
| MT | $12.10 | $22.06 |
| NC | $13.48 | $22.06 |
| ND | $12.23 | $22.06 |
| NE | $12.23 | $19.81 |
| NH | $13.11 | $22.06 |
| NJ | $12.51 | $19.81 |
| NM | $12.04 | $21.98 |
| NV | $12.46 | $19.81 |
| NY | $12.51 | $20.61 |
| OH | $13.20 | $22.06 |
| OK | $12.04 | $19.81 |
| OR | $12.46 | $22.06 |
| PA | $12.51 | $19.81 |
| PR | $19.02 | — |
| RI | $13.11 | $22.06 |
| SC | $13.48 | $22.06 |
| SD | $12.23 | $22.06 |
| TN | $13.48 | $20.00 |
| TX | $12.04 | $22.06 |
| UT | $12.10 | $22.06 |
| VA | $13.48 | $19.87 |
| VI | $20.61 | — |
| VT | $13.11 | $22.06 |
| WA | $12.46 | $19.81 |
| WI | $13.20 | $22.06 |
| WV | $13.48 | $19.81 |
| WY | $12.10 | $22.06 |
Amounts are the Medicare DMEPOS fee-schedule allowables effective April 2026.
Medicare typically pays 80% of the allowable after the Part B deductible; the patient owes 20%.
A 2% sequestration reduction applies to the Medicare share. Former competitive-bidding-area
adjustments and non-continental rates can differ — verify with your DME MAC.
Common denial codes to watch
Related A-codes
Bill A4557 with confidence
MyMedi-AI scrubs whole claims against NCCI pairs, MUE limits, modifier rules, and PA flags before you submit — built for DME teams, no PHI stored on our servers.
Start free trial Run a CMS-0057-F readiness checkPrefer DIY compliance? Self-audit documentation kits for DME suppliers →